Improvement in lamp-burners



MERRILL-L ICARLETON@ Lam p Burner. PatentedV June 1, T869.

inuit-ed @Snart @met @Wina v RUFUs-s. `l'vinaunri. AND WILLIAM CARLETON,or BOSTON, MAssA- r t CHUsnTTs.

Letters Patent No. 90,863, dated June 1, 1869.

IMPROVEMENT IN LAMP-BURNERS.

The Birllledulev referred to in these Letters Patent and making part ofthe same.

To whom lit may concern Be it known that we, RUFUs S. MERRILL and WxL-LIAM CARLETON, of Boston, in the county of Suffolk, and State ofMassachusetts, have invented certain new and useful Improvements inLamp-Burners; and

we hereby declare the following to be a full, clear, and exactdescription of the same, reference being had to the accompanyingdrawings, in which- Figure 1 is a sideelevation of a hydrocarbon-Huidburner with our improvements applied.

. Figure 2 is a perspective view, on an enlarged scale, of the sleeveupon which the cone and other portions of the burner contiguous totheflame are mounted.

Figure 3 is a vertical section throngh the sleeve and wick-tube, onwhich it is mounted, on the line x y, iig. 1.

Our invention relates to burners whose general construction is similarto that described in our applications for Letters Patent now pending inthe Patent Oice; that is Vto say, burners in which the deflector .orcone and chimney-seat, and other parts in the immediate neighborhood ofthe flame, are mounted upon a sleeve fitting the upper portion of thewick-tube, and capable of being readily adj usted upon or removed fromsaid tube.

The object of such an arrangement is, not only to isolate the upperpolton ofthe burner om the base, so as to prevent the latter frombecoming highly heated, but to allow the sleeve, together with the partswhich it carries, to be slipped oli` from the wick-tube, whenever it isdesired `to trim the wick.

Our object is to so construct the burner as to avoid the necessity ofdetacbing the chimney from its holder in order to light the lamp, and toadmit of the sleeve, and theparts which it carries, to be slipped overor adjustedupon the wick-tube, after the wick is lighted, withoutextinguishing the flame. This has been heretofore impracticable inburners of this class, as the sleeve, when slipping down upon the tube,prevents the requisite quantity of air from being fed to the flame, andthus acts as an extinguisher.

Our invention consists in forming the sleeve with a series of aperturesor' slots in its sides, so that the flame, instead of beingenelosed andextinguished by the sleeve, when the latter is fitted upon the tube,will be kept aliveby'the air, which is allowed to pass to it through theapertures in the side of the sleeve. The sleeve is thus, in eect, askeleton-frame, adapted to lit the wick-tube, but sufiicient-ly open toprevent all danger of its acting as an extinguisher, when slipped up ordown on the tube. A

Our invention further consists of a sleeve, which is struck up or formedfrom a continuons sheet of metal. The ordinary method of making thesleeves, is to take a flat piece of metal, and, after first bending itinto a tubular or other desired shape, to hold it in such shape, bysoldering or otherwise uniting together the contiguous edges of thepiece.

A .sleeve thus formed, however, is .not only more troublesome tomanufacture, but, as the soldered joint is comparativelyy weak, theedges which are thus held ltogether are constantly becoming disunited,thus destroying, in a great measure, the utility of the sleeves.

In order to avoid these defects, we strike up'the sleeve from a tlatpiece of sheet-metal, so that it shally be seamless, or formed of onecontinuous piece All parts of the sleeve are thus rendered equallystrong. There is no necessity, as .in the other case, of first giving itthe desired conformation, and then holding it in such shape bysoldering, but the sleeve is struck up or formed at one operation, andwithout the delay attending the ordinary method. n

" To enable others skilled in the art to use and understand ourinventiomwe will now proceed to describe the manner in which the same isor may be carried into effect, by reference to the accompanying draw-'lhe wick-tube c extends up above the covered base, b, of the burner,and the sleeve c, which carries the deiiector l and chimney-holder h, asWell as the diaphragm k, its upon,- and is capable of being moved up anddown on the said tube, as described in the above-named pendingapplicationsfor Letters Patent.

The base of the sleeve rests upon lugs or ears t', formed on thewick-tube, or it may rest directly upon the base, b, or any othersuitable means can be employed for assurin'g it in proper position. v

The ends of the sleeve arethe only portions which are brought in contactwith the wick-tube, the grooves I, formed in such endsfitting upon therounded or Vcurved portion, m, of the wick-tube.

The sides of the sleeve are not in contact with the sides of the tube, aspace, yn, being letton each side, between the sleeve and the burner.

In the sides of the burner slots or apertures p are formed, by cuttingaway lthe metal, or in any other suitable manner. The size and shape ofthese openings, as well as their number, may ofcourse vary. It ispreferable, however, to out away the sides to as great an extent aspossible Without weakening the l of processes required to produce thesleeve reduced, the sleeve being struck up in the ultimate form rcquiredby one operation, but, as there are no joints or seams, the sleeve ismuch stronger and more durable than those manufactured in the ordinaryway.

In order to light the lamp, it is only necessary to remove from theWick-tube the sleeve, which carries with it the deector, chimney-holder,and chimney, thus uncovering,l the wick. As soon as the Wick is lighted,the sleeve is again fitted to the wick-tube, and while it slides downupon the tube toits proper position, the air has free access to theflame through the slots or apertures p, which thus allow the flame,

although enclosed within the sleeve, to be kept alivev until the sleevehas reached its place.

If the ordinary sleeve were employed, it could not, for the reasonsabove stated, be thus applied to the tube after the wick had beenlighted, without extinguishing the flame, and in such case it would,therefore, be necessary, in order to light the lamp, to remove thechimney from the chimney-holder, and to light the wick in the usual way;but under our invention the sleeve may be slipped on or off thewicktube, while the wick is burning,- without any danger of'extinguishing the ame.

Having now described our invention, and the man- In testimony whereof',we have signed our names to this specification, before two subscribingwitnesses.

RUFUS S. MERRILL. WILLIAM CARLETON.

Witnesses:

W. H. HALL, A. W. ADAMS.

